Calpurnia Pisonis (1st century BC), daughter of Lucius Calpurnius Piso Frugi, was a Roman woman, third and last wife of Julius Caesar. They married in 59 BC with no children resulting from the union. According to sources Calpurnia had a premonition of her husband's murder and tried to warn him in vain. In Shakespeare's play, Calpurnia encouraged Decius Brutus to send word to the senate that Caesar was sick on the day of his death, but Caesar refused to lie. Following Caesar's death in the Ides of March (March 15) of 44 BC, Calpurnia delivered all Caesar's personal papers, including will and notes, and most precious possessions to Mark Antony.
In botany, Calpurnia is a genus in Fabaceae.
